Good morning, yesterday I took the contraceptive pill Liberella at 17:10. A little before 11 p.m., while drinking water, I belched and then a small amount of it backed up my throat, but without a gag reflex, so I swallowed it back. Before, while drinking, I also bounced a few times, but without backing up the fluid down my throat. Could this situation have impaired the absorption of the tablets and reduced their effectiveness?